97777772222222 has 8 divisors (see below), whose sum is σ = 147006952205472. Its totient is φ = 48775454820400.

The previous prime is 97777772222219. The next prime is 97777772222233. The reversal of 97777772222222 is 22222227777779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56715644279 + ... + 56715646002.

It is an arithmetic number, because the mean of its divisors is an integer number (18375869025684).

Almost surely, 2^{97777772222222} is an apocalyptic number.

97777772222222 is a deficient number, since it is larger than the sum of its proper divisors (49229179983250).

97777772222222 is a wasteful number, since it uses less digits than its factorization.

97777772222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113431290714.

The product of its digits is 135531648, while the sum is 65.

The spelling of 97777772222222 in words is "ninety-seven trillion, seven hundred seventy-seven billion, seven hundred seventy-two million, two hundred twenty-two thousand, two hundred twenty-two".